Antiskidding and traction device for automobile and other wheels.



W. REAGAN. ANTISKIDDING AND TRACTION DEVFE FOR AUTOMOBILE AND OTHER WHEELS.

APPLIOATIOH FILED FEB 12, 19 19.

Patented Aug:23,1 910.

in? an sinus WILLIAM REA GAN.

N- sacs.

or PHILADELPHIA, PENNSYLVANIA.

Specification of Letters Patent. 1

Patented Aug z3, rare.

Application filed February 12, 1910. Serial No. 543,583.

To all whom it may concern: Be it known that I, W'ILLIAM REAGAN, citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Antiskiddin'g and Traction Devices for Automobile and other Wheels; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to anti-skidding and traction devices for vehicle wheels of the cushion or pneumatictype; and it 'consists in arranging around the circumference of such wheels, at intervals, groups of calkbearing sections which are pivoted directly to eachp'ther, .and means for holding the "bed the ground is will be groups 1n their spaced relation, "as

out in the hereinafter described, and pointed claims. 7

Heretofore, anti skidding devices have been provided with calk-bearing sections that are united by intervening links. Such a construction admits of a bodily motion of the sections which, as the group of sections is brought into contact with the ground, by the revolution of the wheel, tend to become disposed in planes parallel with the ground, the calks of each section pointing directly downward. This relation of the calks to ineffective to prevent or check skidding, because the rather blunt form of such calks causes the advancing side thereof to present an inclined surface .toresisting bodies of matter in the road-way, thus per niitting the calk to easily ride over such bodies. In view of this obvious fact, it is desirable that the calks lying upon either side of the centrally-disposed calks shall point or extend Iateraly at an inclination, so as to enable them to effectively check the tendency'to skid. Thisthey do, because the edge of an inclined, symmetrical. calk will more certainly engage or penetrate the roadthan a calk that stands vertical.

Hence one of the principal objects of this invention is to so construct and arrange the calk-bearing sections that the calks lying will be inclined laterally, so that they will sure toiengage or penetrate. the ground and thereby check- .any tendency of the wheel, to which they are attached, to skid.

.calk-bearing sections, 'calks; Fig.4, a similar vlew, showing anpivoted each to the action. -upon either sldeof the central calk-seetions apparent upon a full disclosure thereof.

In the drawings Figure 1 is a side ele- .vation of an automobile .wheel, showing my invention applied thereto; Fig. 2,. a transverse section of the tire, showing a group of my anti-skidding devices on; Fig. 3, a top plan view of a group of showing one form of other form of ealks; Fig. 5, a detail perspective View of-one of the calk-sections shown in Fig. 4; and Fig. 6, a similar view of one of the'calk-sections shown in Fig. 3.

Specifically, the invention consists of-a suitable number of peculiarly related calkbearing sections 1, grouped at intervals around the circumference of the tire 2 of an automobile wheel, the groups being held in their spaced relation -by-...circular retaining members 3 which, in the present instance, are chains. The callcbearing sections consist of slightly curved metallic blocks 4,

each of which is provided with one or more 'calks 5, sharpened to readily penetrate or engage a road surface, a. pavement, or ice and snow.= The calk-bearing sections are adjacent sectionby means of a knuckle-joint having a removable pintle 6, and the end calk-sections of each group is likewise pivoted to 'a securingblock 7, to which is connected a link of the retaining-member, or chain, of which it con-, stiluies a part, the .end. of each securingblock being provided with oppositely-disposed hooks 8 to receive links of contiguous sections of said retaining-members or chains. These hooks are so disposed that the adjacent calk-bearing sections prevent disenarranged theregagemcnt of the links, but the withdrawal of the pintle which connects the securing-- block with the endsection, will allowthe removal of the links from the hooks.

By omittin the intervening link, heretofore employed to unite the calk-bearing sections and pivoting said sections directly to each other, the number of calks, of ,given length, engaging the ground at any time is increased, thereby increasing the holding- This increase in the number of calks also increases the disposition of certain of the calk-bearing sections at points in the lateral curved surface of the wheeltire, which ,a proximately coincide with the side of the fi zittened load'bearing portion there- 

